πρατικός

ή, όν, Subst., ἡ
A. of or for selling, only as Subst., ‐κή,ἡ, tax on sales, IG 5(1).18 B 12 (Sparta): ‐κόν,τό, commission on sales, POxy. 1454.6 (ii A. D.): pl., Sammelb. 4425 v 13 (ii A. D.).
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
An open-access project